320013243541 has 2 divisors, whose sum is σ = 320013243542. Its totient is φ = 320013243540.

The previous prime is 320013243481. The next prime is 320013243547. The reversal of 320013243541 is 145342310023.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 276803306641 + 43209936900 = 526121^2 + 207870^2 .

It is a cyclic number.

It is not a de Polignac number, because 320013243541 - 2⁷ = 320013243413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320013243547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160006621770 + 160006621771.

It is an arithmetic number, because the mean of its divisors is an integer number (160006621771).

Almost surely, 2^320013243541 is an apocalyptic number.

It is an amenable number.

320013243541 is a deficient number, since it is larger than the sum of its proper divisors (1).

320013243541 is an equidigital number, since it uses as much as digits as its factorization.

320013243541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 320013243541 its reverse (145342310023), we get a palindrome (465355553564).

The spelling of 320013243541 in words is "three hundred twenty billion, thirteen million, two hundred forty-three thousand, five hundred forty-one".